<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .container{}
        .side{
            float: left;
            height: 100vh;
            width: 200px;
            background-color: cyan;
        }
        .main{
            height: 100vh;
            background-color: pink;
        }
    </style>
</head>
<body>
<div class="container">
    <div class="side"></div>
    <div class="main"></div>
</div>
</body>
</html>
